000125233 001__ 125233
000125233 005__ 20241125101130.0
000125233 0247_ $$2doi$$a10.3390/s23052524
000125233 0248_ $$2sideral$$a133010
000125233 037__ $$aART-2023-133010
000125233 041__ $$aeng
000125233 100__ $$aDomínguez, Mario$$uUniversidad de Zaragoza
000125233 245__ $$aTectomer-mediated optical nanosensors for tyramine determination
000125233 260__ $$c2023
000125233 5060_ $$aAccess copy available to the general public$$fUnrestricted
000125233 5203_ $$aThe development of optical sensors for in situ testing has become of great interest in the rapid diagnostics industry. We report here the development of simple, low-cost optical nanosensors for the semi-quantitative detection or naked-eye detection of tyramine (a biogenic amine whose production is commonly associated with food spoilage) when coupled to Au(III)/tectomer films deposited on polylactic acid (PLA) supports. Tectomers are two-dimensional oligoglycine self-assemblies, whose terminal amino groups enable both the immobilization of Au(III) and its adhesion to PLA. Upon exposure to tyramine, a non-enzymatic redox reaction takes place in which Au(III) in the tectomer matrix is reduced by tyramine to gold nanoparticles, whose reddish-purple color depends on the tyramine concentration and can be identified by measuring the RGB coordinates (Red–Green–Blue coordinates) using a smartphone color recognition app. Moreover, a more accurate quantification of tyramine in the range from 0.048 to 10 μM could be performed by measuring the reflectance of the sensing layers and the absorbance of the characteristic 550 nm plasmon band of the gold nanoparticles. The relative standard deviation (RSD) of the method was 4.2% (n = 5) with a limit of detection (LOD) of 0.014 μM. A remarkable selectivity was achieved for tyramine detection in the presence of other biogenic amines, especially histamine. This methodology, based on the optical properties of Au(III)/tectomer hybrid coatings, is promising for its application in food quality control and smart food packaging.
000125233 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E25-20R$$9info:eu-repo/grantAgreement/ES/MICINN/PDC2021-121224-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-105408GB-I00
000125233 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000125233 590__ $$a3.4$$b2023
000125233 592__ $$a0.786$$b2023
000125233 591__ $$aCHEMISTRY, ANALYTICAL$$b34 / 106 = 0.321$$c2023$$dQ2$$eT1
000125233 593__ $$aInstrumentation$$c2023$$dQ1
000125233 591__ $$aINSTRUMENTS & INSTRUMENTATION$$b24 / 76 = 0.316$$c2023$$dQ2$$eT1
000125233 593__ $$aAnalytical Chemistry$$c2023$$dQ1
000125233 591__ $$aENGINEERING, ELECTRICAL & ELECTRONIC$$b122 / 353 = 0.346$$c2023$$dQ2$$eT2
000125233 593__ $$aAtomic and Molecular Physics, and Optics$$c2023$$dQ1
000125233 593__ $$aInformation Systems$$c2023$$dQ2
000125233 593__ $$aMedicine (miscellaneous)$$c2023$$dQ2
000125233 593__ $$aBiochemistry$$c2023$$dQ2
000125233 593__ $$aElectrical and Electronic Engineering$$c2023$$dQ2
000125233 594__ $$a7.3$$b2023
000125233 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000125233 700__ $$aOliver, Sofía
000125233 700__ $$0(orcid)0000-0003-2607-7834$$aGarriga, Rosa$$uUniversidad de Zaragoza
000125233 700__ $$aMuñoz, Edgar
000125233 700__ $$aCebolla, Vicente L.
000125233 700__ $$0(orcid)0000-0002-7902-6005$$ade Marcos, Susana$$uUniversidad de Zaragoza
000125233 700__ $$0(orcid)0000-0002-8973-5104$$aGalbán, Javier$$uUniversidad de Zaragoza
000125233 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica
000125233 7102_ $$12012$$2755$$aUniversidad de Zaragoza$$bDpto. Química Física$$cÁrea Química Física
000125233 773__ $$g23, 5 (2023), 2524 [11 pp.]$$pSensors$$tSensors$$x1424-8220
000125233 8564_ $$s1879115$$uhttps://zaguan.unizar.es/record/125233/files/texto_completo.pdf$$yVersión publicada
000125233 8564_ $$s2676451$$uhttps://zaguan.unizar.es/record/125233/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000125233 909CO $$ooai:zaguan.unizar.es:125233$$particulos$$pdriver
000125233 951__ $$a2024-11-22-11:58:46
000125233 980__ $$aARTICLE